#1. Make sure you've seeded the tank with a good colony of bacteria from an old filter from an established tank.
#2. I'd do a few water changes to get the nitrites / nitrates down a little bit
#3. I would add a heater (if you don't have one already) and warm the tank up to 80 deg F or so. That will really speed up the bacteria metabolism / growth rate

Is inoculating with bacteria from another tank really necessary? I though that they are just all over, like in the air too. No?